Evaporating apparatus.



PATENTED AUG. 14-, 1906.

P. D. SMITH.

BVAPORATING APPARATUS.

APPLIGATION FILED AUG- 1.1905.

[710876303 fiedzzfimzw.

" will also serve to FRED D. SMITH, OF LQS EUJQPQRATENG no. sauces.

Specification of Letters Patent.

Auosnns, oririironnni. Aussie-true.

Patented Aug. 14, 966.

Applioadaion filed August 1, 1905. Serial No. 272.167

To all Ill/LOUD it may concern:

Beit known that I, FRED D. SMITH, a citizen of the United States, residing at Los Angeles, county of Los Angeles, and State of California, have invented a new and useful Evaporator for Fluids, of which the following is a specification. [K

This invention relates to an ei'rhporator which particularly designed and i prided for condensation of milk; and the triumph ject of the invention is to provide means for this appin'atus' which will be more economicul in the operation than the means new in use A further object of the invention is to provide a milk-evaporating apparatus which pasteurize, cool, and aerate the milk and remove from the milk gases and other impurities therein contained and to neutralize or overcome any sourn'ess or incipient putrcfaction or fermentzition in the milk.

A further object of the invention. is to provide an apparatus which can be made to perate contimlously, or substantially so.

The accompanying drawing is a partly-sectional side elevation of an apparatus embodyingtlie invention. 1

1 designates a device which constitutes a pump or means for causing movement or circulation of the milk or iluid. Said device is preferably in the form of an. ordinary pesteurizer comprising casing 1, wherein is mounted a vertical shaft 2, driven by power cpplied to the wheel or pulley 3 and paddles 4, connected to said shaft in such manner as to cause whirling or rotary movement of the milk within the casing on rotation of the shaft. An inlet-pipe 6 leads into the bottom portion of the casing 1 and terminates cenrelly therein, and an outlet-pipe 7 leads from the upper peripheral part of said casing, so that the centrifugal pressure on the milk due to its whirling action will tend to cause the milk to from the inlet to the outlet. The pssteurizer is provided with the usual steam or heating jacket 5, surrounding the some and provided with steam inlet and outlet pipes 8 9. The inlet and outlet pipes 6 and 7 are connected to the respective ends of a circulatory system of pipes, the same com prising outgoing and returning conduits 1O 11, between which are connected any desired number of evaporator tubes 12. These tubes are referably made as individual units, each eing separable from the system and being arranged so that the milk or fiuid drops from the outgoing distributing-conduit into the respective tubes and drops from the respective tubes into the returning-conduit, so that no tight joints are required. Each tube 12 is provided with means for forcing air therethrough, said tubes having an airoutlet opening 17 at the top and being provided at the bottom with air-inlet tubes 13, connected to a manifold pressure-pipe 14, which is supplied with air under pressure from any suitable source, such as a blower 18. The outgoing-conduit is provided with s )outs, nozzles, or outlet-pipes 15, leading t e milk to the respective tubes in such munnor that the milk will drip into the tubes and run down the Walls thereof, and to insure even and thorough distribution of the milk on and around the inner wall-faces each tube is provided at its to I with a feed-cup formed as an annular trough into which the spout 15 discharges, said trough having a central airpassage 17 ciid having holes 16 in the eripher'al portion of its bottom, said he es overlying the funnel-shaped or flaring portion 12 of the tube, so that milk falling into the annular feed-cup will run out through the said holes onto the said funnel at various points around the tube and spreading out on the funnel will cover the inner Walls thereof, the feed being so regulated that the milk Will thereby be exposed onto the said walls in a thin film. t the bottom of eechtube an outlet-spout 28 extends therefrom into the 11, sand conduit being prefee return-conduit ably an open-topped trough.

A tank 19 is preferably connected between the outlet-pipe. 7 and the outgoing-conduit 10, so as to insure a steady supply to the evaporator-tubes. l 1

The milk is supplied. to the inlet of the pasteurizer by means of. a faucet or supply connection 20, discharging into it receiver or funnel 21, connected to the inlet-pipe 6, said funnel also receiving the discharge from the re turn-conduit 1 1 aforesaidi The milk is preferably withdrawn from the system at said rcturn-conduit by means of a faucet or cock22, connected to said conduit.

The. operation of the apparatus isv as follows: The milk to be evaporated is supplied through faucet 20 and runs through tunnel 21 and pipe 6 to the bottom part of the pasteurizer-casing i. The rotary device 2 3 being set in motion auses a whirling motion of the milk, which is thereby thrown against IIi.

' milk. i

casing and rt-y its centrifugal nd along the side "'lllS of mo in psi upwardly into the ouletin rank 19 and thon along the nului'r from which it drops outingspouts into the antllie top of 021.011 of the evapono milk runs or drips from this opr-niir 16 therein onto the *iinorl po tion 12 of the tube. and 1 on the inside wall of'the tube form ol' a thin film or layer. At the yum-tirne Lll' supplied. through the air-inlet "f and pussrs upworrlly through the through the ilisdingo-open ng 17 The mill: being oxioseiil to this curir in :aftliin layer o ornos rapidly 1:..porotorl and condense/ii, and at the some air draws oii' from the milk the inunirities and also acts on the mill; to

into the roto the inlet-- with a new nou snpplj." entire quantity ,illlS supplied to he casing is tli-zan reurned in the manner to the tank 19 and n uporotor-tubes 22 to undergo further ovopmntion.

no tubes 12 in d. roan the *JVlien the fluid or condensed. .rniug in the conduit 1]. has ottxiii'iod the proper degree of condensation or consistency. it can be drawn oii continually or from tune to time through the iouoet Qt is found in pruotioo that by the so... on of oxygen o the air on the milk tlnit contains products of incipient ferniontution the mil '1; can be made non-odorous or sweet. An iinpor ant featuro of tho invontion in this ron noel-ion is the fact that the ova. )orutrln-tubes are exposed externally to the outrr air for cooling tho tubes and tho stroam oi" milk passing tl'i ereiu. This coolin is further uni 9i and era-ted by tho ourr il. oi oi forced. upwardly liougli. he tuims, 1 iii cu i to carry arrow the limit or rot an? also ny the Well ioot {inri' tinknown re; grim. i rapid oraporuiion from tho in .-.-sui.lzioe. This is of iinportunoo, us the pasternrimtion IBQUlI'Q-S wnsiriorable heat, and the milk should not loft longer than possible in tl'iis .llzltfid condition and should be cooled with the ntinost rapidity to normal temperature.

By the above-described apparatus the evaporating, aerating, and cooling functions are all performed siinnltoneousl} and in a. minimum space of time and at a minimum ezipenso.

"Filo dolivery-conduit 11 is located in a plane oolow the distrib11tingpipo 10, and the o speotively liuirl inl ts and outlets of the tubes ure 1' below tho out-lots l5 and above the wnrluit 11 and in mtoli. case out'oi rontuot therewith, so that there are no joints to hr (:orno clogged 0r 'l'oulorl with niilkv Tho nir supply nozzles 13 extend up through tho bottom of the e 11pxuntor-tubos, the latter litting them and being reinovublo tllololroln.

An i oportant iroturo ol the procoss is that it may bu made cru'itiinnnr tho milk boing continually withdrawn at on equiviilrnt quantity of unm'uporutorl nulk lining continually supplied at 20. l

The apparatus is oo ruill uqwlinblo to tho r-vvziporrrtion, puri'i'irution, and sweetening of cream as well as of milk and may be used for other purposrs.

Various olntngos may 'no mud? in the consr uctiou of tho parts without departing from the invention.

In order to i'ucilituto the separation of the till 12 '1 our the system, said tubes may be set rvino'mlily into cups 23 and may lie sup POM-Gil at the top by clamp or clip means 24-. 1 35 designates a frame or support for the v: rious parts connootrri to u suitublo base 26, liicli may b0 formed as a skid, so that tho entire zippurutus is portable or movnhlo from plane. to plow.

What l claim is An apparatus for the evaporation of fluids comprising :1 using provided with fluid inlet and ouilo'. at (lillcrvnt portions thereof and rotzrry lluid-impelling means within said 021sing to drive the fluid from the inlet to the outlet, means for applying heat to suirl casing, a. tank connected to the out-lot, 2], ronduit connootod to said tank and provided with a. plurality of outlets, & plurality ol dctaolniblysupported evaporator-tuhes having annular cups at their upper ends zrrungorl lir-nezitli said outlets to roueivo the discharge f om said outlets. the r-rntrul opening in said unnulzir cups formingair-outlet int-21118 at their upper curls and a r-inlet and fluid-outlot moans zit thoir lower ends, the said tubes oring exposed. extnriorly for cooling tlnn'r-o'l'. 2t oonriuit arranged to receive tin discharge from su' outlet moans of the tubes znid pro vidorl with moons for drawing ofl' fluid therefrom, u rooc-i v01 (:rninootod to the inlol. for tlw aforesaid casing; to roooivo the dis lai'rgo from od supply FRANK S. A. GRAHAM. 

